VM Runtime on GDC is released for General Availability (GA) with the release of Google Distributed Cloud version 1.12.0. All earlier releases of VM Runtime on GDC are in Preview. You can't upgrade from a Preview version to the GA version without first deleting your VMs and disabling VM Runtime on GDC. Once you've upgraded your clusters, then you can enable VM Runtime on GDC again and recreate your VMs.
To upgrade from a pre-GA version of VM Runtime on GDC:
Delete all VMs and their resources from the cluster.
For instructions for version 1.10 clusters, see Delete VMs and their resources in the 1.10 documentation. For instructions for 1.11 and later clusters, see Delete VMs in Google Distributed Cloud.
Disable VM Runtime on GDC.
If Multus is installed on your cluster, uninstall it.
Multus is used with the multi-NIC for pods feature.
Upgrade the cluster.
You can't skip minor versions when upgrading your Google Distributed Cloud. For example, if you have a version 1.10 cluster, you must first upgrade to version 1.11 before you can upgrade to version 1.12.0 or higher. For more information, see Upgrade clusters.
Enable VM Runtime on GDC on your 1.12.0 or higher cluster.
For instructions, see Enable VM Runtime on GDC.
Recreate your VMs.
Due to changes in the VM schema for the GA release of VM Runtime on GDC, you must recreate your VMs. For use with VM Runtime on GDC on version 1.12.0 or higher clusters.